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Finding the Fourth Proportional to 89,617.76, 134,509.67 and 45,275.76

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Solution

The fourth proportional to 89,617.76, 134,509.67 and 45,275.76 is: 67,955.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,617.76 : 134,509.67 = 45,275.76 : x
  2. Step 2: Convert to fraction form
    89,617.76/134,509.67 = 45,275.76/x
  3. Step 3: Cross multiply
    89,617.76x = 134,509.67 × 45,275.76
  4. Step 4: Simplify right side
    89,617.76x = 6,090,027,536.60
  5. Step 5: Solve for x
    x = 6,090,027,536.60/89,617.76
  6. Step 6: Final answer
    x = 67,955.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.